XF 1.4 Upgrade process from 1.1 to 1.4?

I'm soon about to upgrade my forum from version 1.1 to 1.4. I've read various guides here on the forum (especially those by @Brogan) and I've also been doing some thinking what the best way to upgrade would be.

So far I've done a raw list of all my currently installed Add-on. I've gone through the list and marked those I will keep and those I will uninstall.

When I upgrade I will...

Backup DB

Uninstall unwanted add-ons

Upgrade add-ons that are supported in version 1.4.x

Disable add-ons that are not officially supported in version 1.4.x

Upgrade the forum to 1.4.x

Enable the add-ons, one by one, that are not officially supported

Is this a correct order to do things?

I will add more steps as I continue to plan my run book for this event.